# Difference between revisions of "Function Command"

From GeoGebra Manual

(Make it clearer that Function[ <Function>, <Start x-Value>, <End x-Value> ] is deprecated) |
(remove deprecated syntax Function[ <Function>, <Start x-Value>, <End x-Value> ]) |
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<noinclude>{{Manual Page|version=4.2}}</noinclude> | <noinclude>{{Manual Page|version=4.2}}</noinclude> | ||

{{command|function}} | {{command|function}} | ||

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;Function[ <List of Numbers> ] | ;Function[ <List of Numbers> ] | ||

: Yields the following function: The first two numbers determine the start ''x''-value and the end ''x''-value. The rest of the numbers are the ''y''-values of the function in between in equal distances. | : Yields the following function: The first two numbers determine the start ''x''-value and the end ''x''-value. The rest of the numbers are the ''y''-values of the function in between in equal distances. |

## Revision as of 15:40, 17 January 2014

- Function[ <List of Numbers> ]
- Yields the following function: The first two numbers determine the start
*x*-value and the end*x*-value. The rest of the numbers are the*y*-values of the function in between in equal distances. **Example:**`Function[{2, 4, 0, 1, 0, 1, 0}]`

yields a triangular wave between*x = 2*and*x = 4*.`Function[{-3, 3, 0, 1, 2, 3, 4, 5}]`

yields a linear equation with slope*= 1*between*x = -3*and*x = 3*.

**Note:**This command does not work with Tools / Macros. Use the If command as above.

Following text is about a feature that is supported only in GeoGebra 5.0.
- Function[ <Expression>, <Parameter Variable 1>, <Start Value>, <End Value>, <Parameter Variable 2>, <Start Value>, <End Value> ]
- Restricts the visualization of the representative surface of a function of two variables in 3D space.
Example: The expression `a(x, y) = x + 0y` creates a function of two variables, whose graph in 3D space is the planez = a(x, y) = x.`Function[u, u, 0, 3, v, 0, 2] ` creates the function of two variables b(u, v) = u, whose graph in 3D space is the Polygon[(0, 0, 0), (3, 0, 3), (3, 2, 3), (0, 2, 0)] contained in plane rectanglez = a(x,y) = x. |